What element behaves most like magnesium (mg)?

strontium

explanation:

need brainliest, but that's true

the element that behaves most like magnesium would be strontium.

explanation:

it behaves most like magnesium because it is in the same family, the alkaline earth metals. hope this answers the question.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.